Each of the C70*.zmat files contains a Z-matrix obtained as follows:
C70cam.zmat from: Dave Hall
C70am1.zmat from: David Danovich
The first is in the Cambridge X-ray Data Base format and the second is in the AM1 (MOPAC) format.
Thanks to Dave and David for mailing these data.
Ioan Silaghi-Dumitrescu
Universidad Nacional Autonoma de Mexico
Instituto de Quimica
04510 Mexico D.F.
e-mail: ioan@servidor.unam.mx